Keep track of when declarations are "used" according to C and
C++. This logic is required to trigger implicit instantiation of
function templates and member functions of class templates, which will
be implemented separately.
This commit includes support for -Wunused-parameter, printing warnings
for named parameters that are not used within a function/Objective-C
method/block. Fixes <rdar://problem/6505209>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73797 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/warn-unused-parameters.c b/test/Sema/warn-unused-parameters.c
new file mode 100644
index 0000000..115bbab
--- /dev/null
+++ b/test/Sema/warn-unused-parameters.c
@@ -0,0 +1,13 @@
+// RUN: clang -fsyntax-only -Wunused-parameter %s -Xclang -verify
+
+int f0(int x,
+ int y, // expected-warning{{unused}}
+ int z __attribute__((unused))) {
+ return x;
+}
+
+void f1() {
+ (void)^(int x,
+ int y, // expected-warning{{unused}}
+ int z __attribute__((unused))) { return x; };
+}
\ No newline at end of file